Worcester junior 24i (non condensing)

[Gas Lady Mids]

Hi all

Gas Lady here..
I have been trying to sort this boiler.. There is a strong spark between electrodes, Gas on inlet of gas valve... but this boiler would not establish a flame until today.. Me and another gsr engineer have been looking at this boiler, new gas valve and pcb as per mi fault finding guide. yesterday it would not even establish a flame, i checked all connections to the new pcb today, put the boiler back together, made a demand for hot water and the boiler did fire up.. I checked that it worked with central heating too and it worked.. put cover back on left it for ten mins and the boiler went out AGAIN!!! Keeps trying to ignite and going in to lock out... If any of this makes sense to anyone have you got any suggestions of what it might be?

Thank u
x

 

[Billy Bob Bob]

by cover back on are you talking about the combustion door?

 

[P4ULT]

Have you checked the flue. If it works fine with the cover of flue could be faulty. I used to hate doing the vertical flue on these I'm sure the inner flue was just siliconed together. And the outer flue screwed together.

 

[Gas Lady Mids]

Well sorry it fired up before i put cover back on.. but yes combustion door?!

 

[Gas Lady Mids]

Have you checked the flue. If it works fine with the cover of flue could be faulty. I used to hate doing the vertical flue on these I'm sure the inner flue was just siliconed together. And the outer flue screwed together.

No I havent but will do, thanks

 

[Billy Bob Bob]

Well sorry it fired up before i put cover back on.. but yes combustion door?!

check aps,venturies,tubing,flue integrity

 

[warrington]

hope when you sort it , you will post the outcome. as said above i would check aps and flue first.

 

[Gas Lady Mids]

checked aps this morning.. it is working fine. I will certainly let u know the outcome.. 'If we ever get there!!!!

 

[Billy Bob Bob]

checked aps this morning.. it is working fine. I will certainly let u know the outcome.. 'If we ever get there!!!!

dont assume a aps is working fine,they can stick they are the biggest causes of boiler break downs rule out the venturies by cleaning them,check the tubing and inspect the flue if they all check out replace the aps

 

[Gas Lady Mids]

dont assume a aps is working fine,they can stick they are the biggest causes of boiler break downs rule out the venturies by cleaning them,check the tubing and inspect the flue if they all check out replace the aps

Oh right, ok. Will do.. Thank u gas man:17:

 

[Gas Lady Mids]

hope when you sort it , you will post the outcome. as said above i would check aps and flue first.

All sorted.. It was the water pressure switch..:30:

 

[Billy Bob Bob]

All sorted.. It was the water pressure switch..:30:

how did the low water switch cause that fault?

 

[mfgs]

how did the low water switch cause that fault?

I would also like to know that

 

[SafeGasInstall]

well done , some one was here about week ago with the same boiler with the same fault .low water switch must be getting common fault on the old 24

 

[Billy Bob Bob]

well done , some one was here about week ago with the same boiler with the same fault .low water switch must be getting common fault on the old 24

it cant cause this fault though stan,read what the OP posted in post *1,it would light and run with the combustion door off if the low water pressure switch had failed it would not run at all and it should have taken seconds to prove the lwp

 

[SafeGasInstall]

mark I did mean by "fault" faulty water pressure switch same scenario !

symptoms are not directing to this , i do agree ( how could I dare to disagree with you , come on )

I do agree what you say is i was going to recommend if possible to undo flue from boiler as possible blockage some where

 

[Billy Bob Bob]

no prob stan i wonder if the op means aps?

 

[SafeGasInstall]

we all remember what happened to the last person who did disagree

 

[Billy Bob Bob]

it wasn't me honest puddle and redsaw can provide alibis

 

[SafeGasInstall]

that sparky if you remember ,was long ago

 

[Billy Bob Bob]

trying to remember minds gone blank:banghead:

 

[Gas Lady Mids]

Hi all

Gas Lady here..
I have been trying to sort this boiler.. There is a strong spark between electrodes, Gas on inlet of gas valve... but this boiler would not establish a flame until today.. Me and another gsr engineer have been looking at this boiler, new gas valve and pcb as per mi fault finding guide. yesterday it would not even establish a flame, i checked all connections to the new pcb today, put the boiler back together, made a demand for hot water and the boiler did fire up.. I checked that it worked with central heating too and it worked.. put cover back on left it for ten mins and the boiler went out AGAIN!!! Keeps trying to ignite and going in to lock out... If any of this makes sense to anyone have you got any suggestions of what it might be?

Thank u
x

The boiler would not establish a flame until I replaced the gas valve, then if fired up for a while and kept going to lock out, Just through abit of a fluke really I disconnected the water pressure switch and the boiler run perfectly... I tried it several times so replaced the water pressure switch and it sorted... As I have not been qualified very long ( Jan ) I think I am going to attend the Mr Combi course... Any thoughts on this????

 

[warrington]

Good job, i don't know about Mr Combi course but vaillant holding course free , contact with them if you want.